Caster.



PATENTED MAR. 27, 1906. F. F. BISGHOFF.

GASTER.

UN1TED sr.urss

PATENT @FFICE.

FREDERICK F. BISUHOFF. OF CHICAGO, ILLINOIS, ASSIGNOR UNIVERSAL CASTER AND FOUNDRY COMPANY, A CORPORA- TION OF NEW JERSEY.

CASTEIR.

Specificetion of Letters Patent.

Petented Merch 27, 1906.

Applioetion filed September 30, 1904. Seriel N0. 226,608.

To all who1n it may concern:

its objek:t to provide a simple end eflicient structural formation end arrengement of the cester ment 0 the 'socket-sleve t0 the post of the bedstead, an elimination cf friction of the garts to a materiel extent, end a normal olding'of the cester pintle end wheel ageinst accidental djsengegemerit from the bedsteadpost, all es will hereinefter more fully eppear end be more particularly pointed out in the claims.

In the accomp'anying drawings, illustrative of the present invention, Figure 1 is a vertical sectional elevation 0f a furniture-caster embodying the resent improvements.

Fig. 2 is e horizonte section et line w x, Fig. 1.

Similar numerels of reference indicate like parts in both views.

Referring td the drawings, 1 represents the caster-wheel, journaled, es neual, in the cester yoke or freme. 2, which in turfn carries theusuel vertically'-elongtzted pintle- 3, having the usua;l semisphericel upper end 4 end the ennular holding-groove. 5 adjecent to such semiSpherieal upper end. 4

6 is the pi yot-socket of'the caster, having a tubuler sha e. In the resent im rovement such socket 1s formed with a close upper end 01 heed having e'central downwardly-extending semispherical projection 7 edapted 130 constitute an ebutment '01 beering for the semispherical npper end 4 of the caster-pin-' tle end which bearing ofiers but litt le resistance to e turning movement of saidpintleifl ectuel use.

8 is a bead-like inlet formed in the WTO htmetal wall of the socket 6 by a unch in entetion in the outer surfece of t e seme end which inset is edapted to engege in the annul er holdinggroove 5 cf the pintle to hold the seme inp ece in the pivot-socket against acarts effording e substantial ettach-.

cidentel diseiigageinent. With the described construction the pintleis forcibly pushed into place, end in such operetion the circuler Wall of the-socket neer the inset 8 yields sufficient to permit the passege of the sf herical upper end of the pintle. In like manner e forcible disengegement of the perts cen be effected.

9 is e. disk-like supporting-web connected to the loWei end of the pivot-socket end pro- Vided with e marginal upturned rim 10,

adepted to fit the lower end cf the tubular iron post 11 of e bedstee-d end afford a substantial attachme'nt of the Socket in proper osition in the seid post, end in the present construction such ettechment is mede permanent by casting the usuel foot-brnament 12 eround-the rim 10 aforesaid, es illustrated in Fig. 1 cf the drewings.

Having thus fully described.my seid invention, whet I cleim es new, end desire to se eure by Letters Patent, is

1. The combinetion in a cester of e pivotsocket having an integrally-formed closed up per end which is centrally depressed to form e semis hericel depression, a intle -fitting seid soc et end heving a semispherical upper end, end a cester-wheel carried by seid pintle, substai1tielly es set forth. 2. The Combination in e caster of a pivotsocket, e disk like supporting-web et the lower end of seid socket provided with a merginal upturned flenge, a tubular bladsteed-. post fitting seid web end flenge, e cast omeflenge, a pintle fitting seid socket, end a caster wheel carried by seid pintle, substantially es set forth.

3. The combination in a cester of e pivotsocket having an integrelly-formed closed up'- per end which is centrally depreassed to foim e semis}gherical depression, e intle fitting seid soc etand hev1ng eSemisp erical upper end enden ennuler groove adjacentto such end the socket heving a beed -like inset edapted for engagemefit in seid groove, end a caster-wheel carried by seid pintle, substantially es set forth.

. 4. The combinatibn in e cester ofe ivotsocket forn'1edWith e closed ppe'r en having a central semisphe'r'rcal depression, e diskment on the post inclosing seid -marginel 1 .like supporting-web a1; the low'er @nd of said i Signed at Chicago, Illinois, this 20th day %0cket provided wit a marginafili uptufne of July, 1904.

ange, a tubular be stead-post izting sai Web and fiange, a cast ornament 0n the post; FREI) BISCHOFF inclosing said marginal flangga, a intle fitting Witnesses: said socket, and a caster-whee carried by ROBERT BU'RNS,

1VL H. HOLMES.

said pintle, substantially as setf01ith. 

